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Directions: Test the following hypotheses using the Traditional Method. You must show all the steps involved and the final statement must be phrased appropriately for the problem.
A sports-shoe manufacturer claims that joggers who wear its brand of shoe will jog faster than those who don't. A sample of eight joggers is taken, and they agree to test the claim on a 1-mile track. The rates (in minutes) of the joggers while wearing the manufacturer's shoe and while wearing any other brand of shoe are shown here. Test the claim at a 2.5% level of significance.
Runner 1 2 3 4 5 6 7 8
Mfg brand 8.2 6.3 9.2 8.6 6.8 8.7 8.0 6.9
Other brand 7.1 6.8 9.8 8.0 5.8 8.0 7.4 8.0
Each of the given z-scores, draw the normal distribution and sketch the vertical line at location of z-score, then find out whether body is to right or the left of line and determine the proportion in the body.
Which two types of probability sampling are best suited for business research and statistical data analysis, and why?
Assuming that the standard deviation and the normal shape are unchanged, to what level must the mean reduce so that 20 gallons per week is the third quartile rather than the mean?
Find out the Optimum solution using the given data. Consider the following linear programming problem. Illustrate what is the optimum solution to this problem?
I never understood the concept of the Empirical Rule and Chebyshev's Rule. Can you explain it to me and provide me with some sample problems please?
For the following situation, assume the random variable is normally distributed and use a normal distribution or a t-distribution to construct a 90% confidence interval for the population mean. If convenient, use technology to construct the confid..
American Demographics reported the results of a survey on the planning habits of men and women. In response to the question.
Trying to use mathematical models to design effective hypothesis testing during experiments. In hypothesis analysis the null hypothesis and significance level of the test must be set prior to data collection.
Write out the multiple regression equation using the given data.
Describe the use of normal probability plot to evaluate whether a set of data is normally distributed?
The owner of a local night club has recently surveyed a random sample of n=250 customers of the club. She would now like to determine whether or not the mean age of her customers is over 30.
Suppose the sample variance for 3 parts turns out to be S2 = .0005. Use a=.05 to test whether the population variance specification is being violated.
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